Wire-drawing machine



2 Sheets-Sheet c. A. BARRQN wlan-DRAWING MACHINE. Filed Feb. 2S. 193s Avr# oct. s, 1940.

. //V//////y// Q Ocl- 8, l940- c. A. BARI-ONl WIRE-DRAWING MACHINE Filed Feb. 28, 1936 TTK Patented Oct. 8, 1940 UNITED STATES WIRE-DRAWING MACHINE Charles Arnold Barron, Preston, England Application February 28, 1936, Serial No. 66,287 In Great Britain December 8, 1934 6 Claims.

My invention in or relating to wire-drawing machines has for its object to provide a new construction of machine which will not only reduce the cost of and expedite, ,production but will also reduce the risk of accidents.

In wire-drawing machines as hitherto constructed the drawing has been effected by thel action of revolving drums or bobbins, the rotation of which has caused the wire to be drawn through a die or dies and the drawn wire to be wrapped upon the drum or bobbin. To remove the wire from the drum or bobbin it is necessary to stop the machine, and not only does this involve a considerable aggregate waste of time, but it has the further disadvantage that the"pluck on the wire in starting up again frequently results in breakage. Moreover, the revolution of drums containing heavy masses of wire is fraught with danger.

My aim is to overcome the disadvantage appertaining to the present construction of wire-drawing machines and this I propose to do by providing a machine in which the drum or bobbin on which the drawn wire is received is stationary, and the drawing of the wire and the wrapping of it upon the drum or bobbin is effected by caus- By this means a truly continuous action can be obtained, since as the wire accumulates upon a drum it can be removed without stopping the action of the machine. 4

In the accompanying drawings,

Fig. 1 is a sectional elevation of one practical embodiment of the invention; and

Fig. 2 is an end view, looking in the direction oi the arrow 2, Fig. 1;

Referring to the drawings, a represents a suitable housing in which there is revolvably mounted, in bearings b and c, a sleeve member d, carrying a pulley e to which motion is given through a belt f from any convenient source.

Within the'sleeve d there is located, by bearings g, g, a shaft h carrying at one end a re- 45 ceiving drum i having an unobstructed andopen delivery end. v

Mounted eccentrically on the end of the sleeve member adjacent the drum i are a die holder :i and guide pulleys k and m (see Fig. 2).

On the opposite end of the shaft h there is secured the shaft supporting bearing plate n, in vguide ways n' on which there are movable radially a series of catches o, the outer extremities of which are toothed to engage with internally projecting teeth p' on a ring member p fast with the housing a. The purpose of the catches o 1s to hold stationary the plate n, shaft h and drum z'. As the member d revolves it carries the wire around with it, and the catches have to be withdrawnin turn to let the wire pass them.

A cam strip r, projecting laterally from the pulley e, engages in recesses in the catch members o. The major portion of the cam strip r is concentric with the shaft and sleeve member but at one point, as best seen in Fig. 2, it is formed with an inward swell r', which, as the pulley and sleeve rotate, engages the catch members in succession and vmoves them inwardly clear of the internal gear of ring p. y Q

Aligned openings e', and d', d', in the pulley e and sleeved respectively permit of the 'passage of Wire w from a suitable holder to the guide pulleys lc and m which lead it to the die holder. A ring s surrounds and is suitably spaced from the periphery of the plate n to form an annular passage nzior the wire.

As the pulley e revolves, the die holder is carried around the stationary drum i with the re- .sult that the wireV is drawn through the die or dies and is wrapped about the drum, the catches o being withdrawn inwardly in succession to permit of the passage of the wire past them. Immediately the wire has passed a catch, the latter is returned by the action of the cam to its holding` position. The plate n, shaft h and drum i are always locked against rotation.

The device may form a wire-drawing unit in it-f self, or it may be arranged to form the finishing die for a continuous wire-drawing machine of any approved construction.

The actual details of construction andl arrangement of the parts employed in carrying out the invention can obviously be varied from those of the particular embodiment described above. I believe I am the first to propose a wire-drawing machine. or unit in which the receiving drum or bobbin is stationary and the drawing of the wire and the wrapping of it upon the drum or bobbin is eiected by means of a die or dies traversed in a circular path about the drum or bobbins and I do not wish to confine myself to the particular practical embodiment I have described or indeed to any particular form of embodiment.

Having thus described my invention, what I claim as new and desire to secure by Letters Patent is:

1. A wire-drawing machine comprisingja xed receiving drum having an open end, a stationary shaft attached to the opposite end of said drum,

a rotatable wire-drawing member arranged on 55 said shaft, a stationary bearing plate for said shaft and having a wire-receiving opening, means for rotating said drawing member, and means whereby upon rotation of said drawing member wire is drawnthrough said member on to the receiving drum.

2. A wire-drawing machine comprising a wire receiving drum having an unobstructed end, a stationary shaft projecting from the other end of said drum, a rotatable member mounted on said shaft and means for rotating said member, Wire-drawing means so carried by said member that as said member rotates the drawing means are carried around the receiving drum, and a bearing plate for the stationary shaft having a wire-receiving opening through which wire can ,pass to the drawing means.

3. A wire-drawing machine comprising awire receiving drum having an unobstructed end, a stationary shaft carried at one end of said drum, a rotatable wire-drawing member mounted on said shaft, means whereby upon rotation of said member wire is drawn therethrough and coiled on the receiving drum, a stationary bearing plate for said shaft arranged adjacent said rotatable member and having a wire-receiving opening, and a die holder carried by said rotatable member.

4. A continuous wire-drawing machine comprising a stationary wire-receiving drum, wiredrawing means traversable ina circular path about one end of said drum, means for so traversin said drawing means, and means for feeding wire to the drawing means from the side away from the receiving drum, the end of the said drum opposite to that whichreceives the drawn wire from the drawing means being unobstructed so that icoils of drawn wire may slip freely off the same. f

5. A wire-drawing machine comprising a iixed receiving drum having an open end, a shaft extending from the opposite end of said drum, a rotatable wire-drawing member arranged on said shaft, means for rotating said drawing member, means for guiding Wire to be drawn to said drawing member, and means whereby upon rotation of said drawing member wire is drawn through said member onto said receiving drum.

6. A continuous wire-drawing machine comprising a stationary wire receiving drum having an open end, wire-drawing means traversable in a circular path about the opposite end of said drum, means for so traversing said drawing means, andmeans for feeding wire to the drawing means from the side away from the receiving drum.

CHARLES A. BARRON. 

